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* [Bug target/60880] New: Wrong assert in promote_duplicated_reg
@ 2014-04-18  0:41 hjl.tools at gmail dot com
  2021-08-02 20:22 ` [Bug target/60880] Wrong assert in promote_duplicated_reg in i386.c pinskia at gcc dot gnu.org
  0 siblings, 1 reply; 2+ messages in thread
From: hjl.tools at gmail dot com @ 2014-04-18  0:41 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60880

            Bug ID: 60880
           Summary: Wrong assert in promote_duplicated_reg
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com

promote_duplicated_reg has

gcc_assert (mode == SImode || mode == DImode || val == const0_rtx);

But it may be called by promote_duplicated_reg_to_size with HImode:

  else if (size_needed > 1 || (desired_align > align && desired_align > 1))
    promoted_val = promote_duplicated_reg (HImode, val);


^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug target/60880] Wrong assert in promote_duplicated_reg in i386.c
  2014-04-18  0:41 [Bug target/60880] New: Wrong assert in promote_duplicated_reg hjl.tools at gmail dot com
@ 2021-08-02 20:22 ` pinskia at gcc dot gnu.org
  0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-02 20:22 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60880

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I can't see how this assert will ever hit.  I looked into the code and
promote_duplicated_reg_to_size cannot be called with "size_needed > 1 ||
(desired_align > align && desired_align > 1)" being true with val also being !=
const0_rtx.

^ permalink raw reply	[flat|nested] 2+ messages in thread
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2014-04-18  0:41 [Bug target/60880] New: Wrong assert in promote_duplicated_reg hjl.tools at gmail dot com
2021-08-02 20:22 ` [Bug target/60880] Wrong assert in promote_duplicated_reg in i386.c pinskia at gcc dot gnu.org

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